Study

The effect of noisy miners on small bush birds: an unofficial cull and its outcome

  • Published source details Debus S.J.S. (2008) The effect of noisy miners on small bush birds: an unofficial cull and its outcome. Pacific Conservation Biology, 14, 185-190.

Actions

This study is summarised as evidence for the following.

Action Category

Reduce inter-specific competition for nest sites of songbirds by removing competitor species

Action Link
Bird Conservation
  1. Reduce inter-specific competition for nest sites of songbirds by removing competitor species

    A before-and-after study of bird species in privately owned remnant eucalypt woodland in New South Wales, Australia (Debus 2008), found a decline in small and medium songbirds after a dense colony of noisy miners Manorina melanocephala became established.  The number of bird species increased after a cull of the noisy miners, and improved further as new planting of native trees and shrubs became established.   The results are consistent with noisy miners causing a decline in small woodland bird diversity by competitive exclusion, released by culling.  The restoration of a shrub layer is likely to have played a part in the maintained increase in the diversity of bird species, but the relative contributions of the cull and planting cannot be quantified.    The study was not replicated or controlled, and the cull was unofficial and unsanctioned.

     

Output references
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